I am now up to a grand total of six Ninja Man-Bats (aka Vampire Bat) minifigures from Lego blind bagged Series 8. I'll probably stop actively looking for them now, but if I am standing around the Lego aisle and have squeeze time, I'm going to keep passively looking for more!
'Did you hear something, Alfred?'
'Just a bat, sir.'
I also built this mini Batcave and customized a Michael Cain Alfred to go along with the black costume Batman from the Batski polybag set.
I'll probably evolve and expand upon the mini Batcave as time goes by, and as my Ninja Man-Bat Commando Army grows!